Carton and method of making same



A. C. SCHROEDER CARTON AND METHOD OF MAKING SAME Filed Feb. 24, 1931 Feb. 16, 1932.

2 Sheets- Sheet 1 INVENTOR A1TORNEYS AfiTl/l/fi c. 50%?0 05/? avg, 2 g g u Feb. 16, 1932. A. c. scunosnsn 1,845,891

CARTON AND I ETHOD OF MAKING SAME Filed Feb. 24, 19:51 2 She ets-Sheet 2 I INVENTOR 4Rfl/uR C.5Cf/ROEDR ATTORNEYS Patented Feb. 16, 1932 UNITED STATES PATENT OFFICE ARTHUR C. SCEBOEDEB. OF SYRACUSE, NEW YORK, ABSIGNOR TO CONSOLIDATED PAPER COI'PANY, OF MONROE, MICHIGAN, A COBIOBATION OF IICHIGAN GLENN AND METHOD OF MAKING SAME Application filed February 24, 1981. Serial Io. 517,786.

This invention relates to improvements in cartons and the method of making the blanks from which they are formed.

Heretofore it has been customary to manufacture cartons and the like of different kinds of material from which rectangular-shaped blanks are cut. Such blanks are scored and cut to form the sides and closure flaps of the carton, whereupon each blank is folded on it) the scored lin s to set up the carton. In so doing, the ends of the blank are brought together to form one of the edges oi the carton and said ends are then secured by a strig of tape which extends along said edge an is fastened to the adjacent sides by a suitable adhesive. Aside from the additional expense entailed in the manufacture of the carton b the use of said tape, experience has shown tfiat, in assembling the carton, it is not always possible to bring said ends exactly together so that they will contact each other throughout their lengths after the tape has been applied. This fact not only increases the inherent weakness of the carton adjacent $5 the edge to which the tape is secured, but results in the formation of a carton which is not truly polygonal in configuration.

A feature of the present invention is to form a carton from a blank, the ends of which meet along a line which extends at an angle to an edge of the carton, thereby eliminating the use of tape for securing together the meeting ends of the blank and material- 1y enhancing the resistivity of the carton to either outward or inward pressure.

The above feature is applicable to various kinds of material from which carton blanks are formed and is especially advantageous when applied to corrugated fiber board, since it results in the production of a carton of greater strength thanone made with said board in the usual manner. As is well known, fiber board is made from a length of corrugated web in which the corrugations run perpendicular to the longitudinal edges of said length, and which is faced on either or both surfaces with liners. It has also been proposed to make such fiber board with the corrugations of the web running diagonally [3 thereacross so that, when a carton is formed from a blank of such material, said corrugations will extend diagonally to the various edges of the carton, thereby materially increasing the strength thereof. In my conding application, Serial No. 464,484, filed une 28, 1930, there is disclosed a method and machine for making fiber board wherein a continuous length of corrugated material, in which the corrugations run perpendicular to the edges of said length, is divided into sections by a cutting o eration, after which said sections are assem led into another con-' tmuous length in which said corrugations extend diagonally to said edges. In order to carry out this method, certain instrumentalities, in addition to the usual standard ized equipment employed in the manufacture of corrugated board, are used to accomlish the assemblage of the cut sections and, urthermore, the carton blanks which are severed from the second continuous length are of the usual rectangular shape and there- 'fore embody the same objectionpreviously referred to herein.

By utilizing the feature of forming the carton blank with ends that meet, in the as sembled carton, along aline which extends at an angle to an edge of said carton, I am enabled to dispense with the additional instrumentalities above mentioned and make a di agonally corrugated blank with machinery now in common usage in the manufacture of ordinary corrugated board.

The inventive idea involved is capable of receiving a variety of expressions, one of which, for purposes of illustration, is shown in the accompanying drawings, wherein 1- Figure 1 is a plan view, partly broken away, of a portion of a continuous length of corrugated board in which the corrugations extend perpendicular to edges of said length;

Figure 9 is a plan view illustrating the step of cutting the length of material into sec tions;

Figure 3 is a scction'on the line 3--3 of Figure 1';

Figure 4 is a plan view of one of the carton blanks after it has been cut and scored to define the sides and closure flaps of the carton;

which the blank is cut.

Figures 5 and 6 are perspective views of the blank in different stages of assemblage;

Figure 7 is an enlar ed sectional View through the ends of the lank 'ust prior to bringing the same together in a utting relation; and

of Figure 6, showin the meeting ends of the blank secured toget er.

The invention is illustrated in its a plication to a carton made of corrugated fiber board and, as previously mentioned, the construction of the carton blank is such that no mechanism in addition to the usual machinery is required to make the board from In fact, the material is made in the same manner as heretofore, with the exception that the liners 10 and 11 (when two are employed) which face the opposite sides of the web 12 of corrugated material, usually called the straw, are of a greater width than said web and are applied thereto each with one longitudinal edge extending beyond the adjacent edge of the web to orm securin flaps 13, the purpose of which will later described. As shown in Figures 1 to 3, the liner 10 has its flap 13 extending beyond the left-hand edge'of the web 12, while thoaliner 11 has its flap rojectin beyond the opposite edge of said we It 'wil be understood that single-faced board ma be f used in making the present carton instea of the double-faced material above described, in which event, of course, the single liner 3; utilized would also be applied to the web to provide a securing flap. As the board thus formed comes from what is known as the backer of the machine, it is cut by a knife in the customa way, except that said knife is set at an, ob ique an le to the longitudinal edges of'the formed s act, which angle may be one of a proximately 45. The operation of the kni e is timed with the speed of travel of the material so that the former will sever sections of board, the width of each of which between the diagonal edges thereof is equal to the combined heights of the sides and closure flaps of the carton to be formed.

ach severed section is now in the form of an oblique-angled parallelogram wherein the corrugations of the relative to the longitudinal edges of the section. There now remains only the cutting and scoring operations to complete the car- 4 tonblank. With the rectangular form of blank now in common usage, is ree transverse scores and cuts are made to define the four sides and closure flaps of the carton. However, inthe present instance, five of such cuts and scores are made and this is accomplished simply by the addition to the usual mechanism of two more slitters and creasers. Thus, as shown in Figure 4, five transverse scores 14 and two longitudinal scores 15 are made to define the sides 16, 17, 18 and 19 0011- Figure 8 is a similar view on the line 88 the sides 16 and web 12 extend diagonally stituting the body portion of the carton. The sides 17 and 18 are rectangular, while the other two have certain edges defined by the oblique ends of the blank. However, when the latter is folded, the portion 20, defined by the transverse score at the extreme left of Figure 4, completes the side 19, while the portion 21 at the right end of said figure constitutes art of the side 16. At the same time that t is scores are being made, the four slits 22 are out along each longitudinal edge of the blank in direct alignment with the transverse scores 14, thereby forming the top and bottom closure flaps 23 to 26 and 27 to 30, resepctively. When the blank is folded, the two sets of end portions constitutin the flaps '23 and 27 are brought together to orm such flaps.

With the blank thus completed, adhesive is applied to the underside of the flaps 13 and the blank is then folded on the lines 14. In so doing, the two ends of the web 12 are moved toward each other, as indicated in Figure 7, and finally brou ht into abutting relation (Fi ure 8) with t e glued surface of the flap 0 liner IO-engaging the other end of, said liner, while the securing flap ofthe liner 11 engages the opposite end of the latter liner. The flaps are secured to their respective linefs by the adhesive applied to the ormer and the carton is now partially assembled, as shown in Figure 5, in which sition the line formed by the meeting en s of the blank extends diagonally across the bottom flap 27, the side 19, intersects the edge of the carton formed by the adjacent ends of 19 and then extends diagonally across the side 16 and the top flap 23,. The bottom flaps 28, 30 and 27, 29 and the top flaps 23, 25 and 24, 26 are now successively turned in, whereupon the carton is completed and ready for sealing.

It will be ap arent from the fore oin that, by having t e meeting ends of the Ela extend angularly to the edge of the carton formed by the adjacent ends of two sides thereof, weakening of the carton along said edge and the necessity of using tape to secure together said meeting ends 'is entirely obviated, with the result that a stronger carton is produced and at less expense, since the cost of the tape far exceeds that incurred by making the liners 10 and 11 wider to form the What is claimed is: I

1. A carton formed from a sheet of mate rial bent to provide a body portion constituting the sides of the carton, and closure flaps formed along the edges of said sides, the connecting ends of said body portion meeting along, a line extending diagonally to one of said edges. V

2. A carton formed from a sheet of material bent to provide sides and edges of the carton, the ends of said bent sheet meeting along a line intersecting one of said edges.

3. A cartonformed from a sheet of material bent to provide sides and edges of the carton, the ends of said bent sheet meeting along a line intersecting one of said edges and extending diagonally across adjacent sides of the carton.

4. A carton formed from a sheet of material bent to provide sides and edges of the carton, the ends of said bent sheet meeting along a line extending at an angle to one of said edges, and a securing flap at each end of the sheet and overlapping the other end thereof when said ends meet.

5. A carton formed from a sheet of material bent to provide the sides, fla s and edges of the carton, the ends of sai bent sheet meeting along a line extending diagonally across certain of said sides and flaps.

6. A carton formed from a sheet of material bent to provide the sides, flaps and edges of the carton, the ends of said bent sheet meeting along a line extending diagonally across certain of said sides and flaps and intersecting an edge ofthe carton.

7. As a new article .of manufacture, a sheet of material in the form of an obliqueangled parallelogram for use in making polygonal cartons, said sheet being cut and scored to provide sides and closure flaps.

8. As a new article of manufacture, a sheet of material in the form of an obliqueangled parallelogram for use in making polygonal cartons, said sheet being made of a corrugated web in which the corrugations extend diagonally thereacross, and being cut and scored to provide sides and closure flaps.

9. A carton formed from a sheet including a web of corrugated material in which the corrugations extend diagonally to opposed edges of .the sheet, and in which the ends of the sheet are cut at an oblique angle to said edges, said sheet being bent to provide sides and edges for the carton, with the ends of said bent sheet meeting along a line extending at an angle to one of said edges.

10. A carton formed from a sheet including a web of corrugated material in which the corrugations extend dia onally to 0p posed edges of the sheet, an ends of the sheet are cut at an oblique angle to said edges. said sheet being bent to pro vide sides and edges for the carton, with the ends of said bent sheet meetin along a line which intersects an edge of said carton and which extends across sides thereof adjacent said edge.

11. A carton formed from a sheetincluding a web of corrugated material in which the corrugations extend diagonally to opposed edges of the sheet, and in which the endsof the sheet are cut at an oblique angle to said edges, said sheet being bent to provide sides in which the ing at an angle to one of said edges, and a securing flap at each end of the sheet and. overlapping the other end thereof when said ends meet.

12. A carton formed from a sheet including a web of corrugated material in which the corrugations extend diagonally to opposed edges of the sheet, and in which the ends of the sheet are cut at an oblique angle to said said bent sheet meeting along a line extendedges, said sheet being bent to provide sides and edges for the carton, with the ends of said bent sheet meeting along a line which intersects an edge of said carton and which extends across sides thereof adjacent said edge, and a securing fla at each end of the l sheet and overlapping t e other end thereof when said ends meet.

13. A carton formed from a sheet including one of the latter edges. and with the securing i flap at one end of each liner overlapping the other end thereof.

14. A carton formed from a sheet including a web of corrugated material in which the corrugations extend (lia onally to opposed edges of the sheet, and in which the ends of the sheet are cut at an oblique angle to said edges, and liners for the opposed surfaces of said web having edges atopposite ends of TI the web extending beyond the adjacent edges of the latter to form securing flaps, said sheet being bent to provide sides,closure flaps and edges for the carton with the ends of said bent sheet meeting along a line intersecting one of the latter edges and extending diagonallv across certain of the sides and closure flaps of the carton, andwith the securing flap at one end of each lineroverlapping the other endthereof. v

15. The method of ma-king carton'blanks, which comprises cutting a mini .from a continuous length of material on "arallel lines which form op site edges of t e blank and which extend (Eli edges of said length, the width of said sec tion between said parallel lines being at least equal to the combined height of the sides and closure flaps of the carton, and cutting and said sides and 1 creasing said section to define flaps.

16. The method of making carton blanks, which comprises cutting a continuous length gonally to the longitudinal of corrugated fiber board into sections on parallel lines which form opposite edges of the blank and which extend diagonally relative to said corrugations, and thereafter cut-- ting and scoring each section on lines intersecting said corrugations to define the sides and closure flaps of the carton.

17. The method of making carton blanks, which comprises cutting a continuous length of corrugated fiber board into sections on parallel lines which form opposite edges of the blank and which extend diagonally relative to said corrugations, said lines bein distances apart at least equal to the comgined height of the sides and closure fla s of the carton, and thereafter cutting an scoring each section on lines intersecting said cor- 1riugations to define said sides and closure aps.

18. The method of making carton blanks,

which comprises forming a continuous length of material by applying liners to the opposed surfaces of a corrugated web wherein the corrugations extend perpendicular to certain edges of said web, with opposite edges of said liners extending beyond the adjacent edges of the web, cutting said len h ofmaterial into sections on lines exten ing diagonally across said corrugations, and cutting and scoring each section on lines intersecting said corrugations to define the sides and closure so flaps of a. carton.

19. The method of making a carton, which comprises forming a continuous length ,of material by applying liners to the o posed surfaces of a corrugated Web wherein t e corrugations extend perpendicular to certain edges of said web, with opposite edges of said liners extending beyond the adjacent ed es of the web, cutting said length of material into sections on lines extending diagonally across said corrugations, cutting and scoring each section on lines intersecting said corrugations to define the sides and closure flaps of a carton, folding said section on certain of said scoring lines to bring the ends of said web in abuttin relation and the projecting portions of sai liners into overlapping relation with the adjacent ends of said section and securing said projecting portions to said ends.

In testimony whereof, I have atfixed my signature.

ARTHUR C. SCHROEDER. 

